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Free WCAG Color Pair online
Test contrast for accessibility compliance.
WCAG Color Pair on DocTools helps you test contrast for accessibility compliance, with no account needed. Paste your file into WCAG Color Pair, tweak the options, and take the result with one click. WCAG Color Pair runs locally on your device, so nothing is uploaded to a server.
- Free to use
- No signup
- Private and local
- Unlimited use
Why use WCAG Color Pair
- test contrast for accessibility compliance without installing software
- Your file is processed on your device by WCAG Color Pair, never uploaded
- WCAG Color Pair needs no account, email address or payment details
- WCAG Color Pair shows live output that updates as you type
- WCAG Color Pair is keyboard accessible and screen-reader friendly
- WCAG Color Pair is free forever, with no watermark on the result
WCAG Color Pair runs entirely inside your browser. Your file is never uploaded, stored or shared, and nothing is retained once you close the tab.
How to use WCAG Color Pair
- Enter your file Paste or type your file into the input panel above.
- Adjust the options Set the options that control how WCAG Color Pair handles your input.
- Process it WCAG Color Pair works instantly on your device, with no queue and no upload wait.
- Copy or download Copy the output to your clipboard or download it as a file, free and unlimited.
Benefits
Private by design
Your file stays on your device while WCAG Color Pair works. WCAG Color Pair never sends it to a server, so confidential work stays confidential.
Instant results
WCAG Color Pair finishes most jobs in under a second because the work happens on your own hardware.
No signup, no limits
Use WCAG Color Pair as many times as you want. WCAG Color Pair asks for no account, adds no watermark and keeps no paid tier gating the output.
Works on any device
WCAG Color Pair runs in any modern browser on desktop, tablet and phone, with a keyboard-accessible interface throughout.
Who it is for
For designers
Designers use WCAG Color Pair to prepare assets for handoff without installing software: test contrast for accessibility compliance on a shared or locked-down machine.
For marketers
WCAG Color Pair helps marketers publish campaign assets quickly, since your file never leaves the laptop it was created on.
For freelancers
WCAG Color Pair helps freelancers send client deliverables quickly, since your file never leaves the laptop it was created on.
How it works
WCAG Color Pair loads your file into memory, applies the change you requested to the underlying data rather than to a screenshot of it, and writes a fresh copy for download. Your original stays untouched on disk, and every step of WCAG Color Pair happens inside your browser sandbox.
Frequently asked questions
Is WCAG Color Pair free to use?
Yes. WCAG Color Pair is completely free with no account, no trial and no usage cap. Every feature on this page is available on the first visit.
Does WCAG Color Pair upload your file to a server?
No. WCAG Color Pair processes your file inside your browser, so it never reaches a DocTools server. That also means the tool keeps working if your connection drops mid-task.
Is there a limit on how much input I can use?
WCAG Color Pair handles inputs into the megabytes without trouble; the only real limit is how much your browser tab can hold in memory.
Do I need to install anything to use WCAG Color Pair?
No installation is needed. WCAG Color Pair runs in Chrome, Edge, Firefox and Safari, on desktop and on mobile, with no extension or plugin.
Can I use WCAG Color Pair on a phone or tablet?
Yes. The WCAG Color Pair interface adapts to small screens and supports touch input, though very large jobs are faster on a desktop browser.
What happens to your file when I close the tab?
It is discarded. WCAG Color Pair keeps everything in temporary browser memory, so closing the tab removes every trace of the session.
Related tools
- Color Accessibility Checker | WCAG matrix audit for full palettes
- Adjust Contrast | Modify image contrast for better detail
- PDF Accessibility Checker | Check PDF accessibility
Last updated: 2026-09-07